0001144204-04-015022 Sample Contracts

Exhibit 4.3 (1) CIMYM, INC. (2) CIMAB S.A. AND

Development and License Agreement • September 24th, 2004 • Ym Biosciences Inc • Pharmaceutical preparations • London

• Contract Type
  Development and License Agreement
• Filed
  September 24th, 2004
• Company
  Ym Biosciences Inc
• Industry
  Pharmaceutical preparations
• Jurisdiction
  London

CLINICAL RESEARCH SERVICES AGREEMENT BETWEEN YM BIOSCIENCES, INC. AND PHARM- OLAM INTERNATIONAL LTD.

Clinical Research Services Agreement • September 24th, 2004 • Ym Biosciences Inc • Pharmaceutical preparations • Ontario

• Contract Type
  Clinical Research Services Agreement
• Filed
  September 24th, 2004
• Company
  Ym Biosciences Inc
• Industry
  Pharmaceutical preparations
• Jurisdiction
  Ontario

EXHIBIT 4.20 CONFIDENTIAL

License, Development, Manufacturing and Supply Agreement • September 24th, 2004 • Ym Biosciences Inc • Pharmaceutical preparations • England and Wales

• Contract Type
  License, Development, Manufacturing and Supply Agreement
• Filed
  September 24th, 2004
• Company
  Ym Biosciences Inc
• Industry
  Pharmaceutical preparations
• Jurisdiction
  England and Wales